(19)
(11) EP 1 322 120 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.06.2005 Bulletin 2005/22

(43) Date of publication A2:
25.06.2003 Bulletin 2003/26

(21) Application number: 02258174.8

(22) Date of filing: 27.11.2002
(51) International Patent Classification (IPC)7: H04N 7/24, G06T 9/00, H04N 7/26
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 27.11.2001 US 333130 P
03.12.2001 US 334541 P
26.12.2001 US 342101 P
04.04.2002 US 369597 P
13.11.2002 KR 2002070496

(71) Applicant: SAMSUNG ELECTRONICS CO., LTD.
Suwon-City, Kyungki-do (KR)

(72) Inventors:
  • Kim, Do-Kyoon
    Seongnam-city, Kyungki-do 463-832 (KR)
  • Jung, Seok-Yoon
    Seoul (KR)
  • Jang, Euee-seon, 101-2301 Gangbyeon Kunyoung Apt.
    Seoul (KR)
  • Woo, Sang-oak, 508-1303 Gongjak Maeul Lucky Apt.
    Anyang-city, Kyungki-do (KR)
  • Lee, Shin-jun
    Seoul (KR)
  • Han, Mahn-jin, 307-602 Satbyeol Maeul Woobang Apt.
    Seongnam-city, Kyungki-do (KR)
  • Jang, Gyeong-ja
    Deokyang-gu, Goyang-city, Kyungki-do (KR)

(74) Representative: Exell, Jonathan Mark 
Elkington & Fife Prospect House 8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB)

   


(54) Method and apparatus for encoding and decoding key value data of orientation interpolator node


(57) A method and an apparatus for encoding key value data of an orientation interpolator representing the rotation of an object in a keyframe image are provided. The apparatus includes a rotational differential data generator which generates, using a rotational transformation value of a current keyframe and a restored rotational transformation value of a previous keyframe, a rotational differential value used to rotate the object by as much as a difference between rotational transformation applied to the object in the current keyframe by key value data and rotational transformation applied to the object in the previous keyframe by key value data, and outputs rotational differential data by quantizing the rotational differential value, a circular DPCM operator which selectively performs a linear DPCM operation or a circular DPCM operation on rotational differential data, and an entropy encoder which entropy-encodes the rotational differential data.






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